Are there anything similar to "perl -pe" option in python?

Question

TL;DR I want to know what is an option in Python, which might roughly correspond to the "-pe" option in Perl.

I used to use PERL for some time, but these days, I have been switching to PYTHON for its easiness and simplicity. When I needed to do simple text processing on the shell prompt, I had used perl -pe option. The following is an example.

grep foo *.txt | perl -pe 's/foo/bar/g'

To do a similar thing in Python, could someone explain to me how I can do this?

Answer 1

-pe is a combination of two arguments, -p and -e. The -e option is roughly equivalent to Python's -c option, which lets you specify code to run on the command line. There is no Python equivalent of -p, which effectively adds code to run your passed code in a loop that reads from standard input. To get that, you'll actually have to write the corresponding loop in your code, along with the code that reads from standard input.